Automatic sewer flusher



July 18, 1933. H WIRZ, JR 1,918,678

AUT OMAT I C SEWER FLUSHER Filed Dec, 2l, 1931 Fi g'. .L

:s '27 sz :MJ-2 3'* INVENTOR. HERMHN W/Rz r/z.

ATTORN Y.

Patented July 18V, 1933 :UNITED sTA'rrijs PATENT OFFICE` HERMAN wmz,Jn., oELos ANGELES, CALIFORNIA, AssIGNon or roR'rY-NINE ONE-VIi'UNnnE-nmns' 'ro CHARLES E. HLAvA'rY, oF Los ANGELES, CALIFORNIA`AU'roiuAtrJIo SEWER FLUSHER Application filed yDecember-'21, 1931.Serial No. 582,272.

ylhis.invention relates to improvements in The intercommunicatingportion 26 is prosewer flushers. r

The generalobgect of the invention is to provide an improved automaticdevice for iiushing main sewers with fresh water.

Another object of the invention is to. provide an automaticsewerAlusherincluding a water reservoir Vfrom 'which the water 1s siphoned'when thewater in the' reservoir reaches a predetermined level.

Fig. 2 is a section taken on line 2-2 Aof Fig. 1. y n D ig'. 3 is a`section taken on line .1 -3 of g. 1. Fig. 4 isan enlarged sectionaldetail, and

. Fig. 5 is an enlarged sectional detail of the metering. device. Y Y jReferring to the drawing by referencevcharl aeters l have shown a waterreservoir tank inciuding the features of my invention generally at 10.

As shown the reservoirv is ofthe type new usually used for the purposeof iiushine; sewers andl have shown my invention lapted to be installedin this type of reseiwcur.`V The reservoir 10 includes a main portion 12having a centrally located reduced weil 13 therein. To adapt this typeof reservoir for my invention a portion of the well 13 is deepened toform a well 14 and a partition wall 15 is provided which terminatesbelow the top of the reservoir and divides the reservoir iutwo sections16 and 17. A pipe 18 which communicates with thesewer opens into thewell 14.

In the reservoir 12 I provide a siphon device which is indicatedgenerally at 2O and includes a yoke portion 21, a connecting portion 22and a goose neckportion 23. The yoke portion 21 includes two legs 24 and25 positioned one on eachside of the wall 15 and which communicate witheach other by a. portion 26 which has a common outlet 26a Y (see Fig. 4)opening through the top thereof.

vided with a small vent aperture 26 in the lower wall thereof. The lowerends of the legs 24 and 25 extend downwardly to a point spaced a slightdistance above the bottoni of the reservoir portion 12. The connectingportion 22 communicates with the yokevv outlet 26 and curves as at 27 toone side of the wall 15 into the reservoir portion 17 where itinw cludesa downwardly extending leg 28 which communicates with the inlet 29 ofthe goose `neck portion 23.

The goose neck. portion23 of the siphon includes a downwardly extendingportion 36 w rich extends downward to adjacent the bottom of the well 14where it rounds into an upwardly extending portion 31` which in Vvcludesan angular outlet portion' 32 which communicates with the pipe 18 to thesewer. On the angular outlet portion 32 of the goose neck I provideareduced inlet portion 33 having a pipe 34 communicating therewith whichextends upwardly to a point above the maximum water level in thereservoir. The pipe 34 serves as an overiiow pipe to prevent -anexcessive amount of water from accumulating in the' reservoirshouldthedevice become inoperative and also as a vent to allow escape of anysewer through the pipe 18.

For fillingV the reservoir l provide a pipe gases which back up u 35which extends from Ya suitable source of water supply (not shown). Thepipe .35 'extends downwardly to adacent the wall 15 where it includes abranca portion 36 whichY extends into the portion16of the reservoir anda branch portion 37 which extends into the portion 17 `of the reservoir.The branch 36 is provided with an outlet valve 33 which is actuated by afloat and t-he'branch 37 is provided with an outlet valve 40 which isactuated by a iioatr41. The valves 38 and 4() may be any type of floatactuated valve desired. VThe valve 38 is arranged so that when the ioat39 moves downwardly a predetermined distance it will open to dischargewater therefrom while the valve 4() is arranged so that when the yfloat41 rises it will open to discharge water therefrom.

The flow of water-through the pipe y35 to the valves 38 and 4G may becontrolled by a shut-off valve 42. i l

Adjacent the top of the wall 15 I provide a metering device indicatedgenerally at 45.- As shown this device includes a metal plate 46 whichis preferably copper, embedded in the wall, and includes a loweraperture 47 and an upper aperture 48. Secured Vtothe plate 46 andextending downwardly at an angle towards the reservoir portion 17 Iprovide a trough 49. For protecting the metering device 45 from refuseor other foreign matter I preferably provide screen members as indicatedat 50.

In operation thevalve 42 is opened to allow-water to iiow to the Yvalves38 and 40. VVhenthe valve 42 is opened water will flow to the valve 38and discharge theretroniinto the reservoir 'portion 16 as the lioat .39Vis in a lowered position and the valve 38 is open. The water flows fromthe valve 38 into the Vreservoir section V16 and rises 'therein until itreaches the metering device 45 whereupon as the water continues to riseit llows 'through the metering aperturel and discharges into thereservoir section 16. As the water rises in the reservoir section 17 andthe lower end of the yoke leg 25 becomes submerged the air trapped inthelegs 24 and 25 esca pes through the vent aperture 26of the yoke. Whenthe water rises inthe reservoir te a point adjacentthe top of the wall15 'it raises the float 41 which in turn opens the valve 40 whereupon`the valve 40discharges water into the reservoir section 17.

The water continues to flow from the reservoir section 16 .throughthen'ietering device 45 into thev reservoir sectionv 17 until the waterlevels iiiY both the reservoir sections 16 -and 17 are the saine.`whereupon the water leveliin both sections continues to rise and. risesabove the topot the wall 15 and to a point above the outlet 26a asindicated at A K 'in Fig. 2. As the water rises above the outlet "l 260;it llows through the connecting portion 220i the siphon intothe gooseneck portion V23 and thence into the pipe 18 from which itis dischargedinto the sewer.

As the water thus flows through the goose neck into the pipe 1Sv itcreia-tes a suction which produces a Siphon action in the legs 24 alid25 thereby causing tle water in both reservoir sections 16 and -17 to bedrawn therefrom untilthe water level iii the sec- 26` will not breakthe'suction due to the large 4level of the upper-aperture 48'and willthen liow through the aperture 48 into the reservoir section 17.

The reservoir is divided into two portions to enable the metering to beaccomplished by the device 45 instead of by float valves 38 and-40.y Inoperation the reservoir portion 16 is rapidly filled by the valve 38until the' level of the water in the reservoir 16 reaches the device 45.The float 39 is set to cause water to llow from the valve 38 only whenthe water level permits a slight discharge through the device 45. Thisiills the reservoir 17 very slowly, requiring about twenty-tour hoursfor the operation.

When the water in the reservoir 17 reaches the lioat 41 the valve'40 isopened whereupon they water level rapidly rises to the position shown atA (Fig. 2). Then the water has reached this level A the airentrapped inthe space 26a and the pipe 30 has a pressure suiiicient to'bubblethrough the water in the trap 31. 4As the air surges through the trap 3lthe siphonizing action is started and the water discharges at the fullcapacity ot the siphon. 'F rom the foregoing description it will beapparent that I have provided a novel sewer 4flushing device which issimple in construction and eliicieiitin use.

Havingthus described my invention, what I claim is: y

1. In a sewer flushing device, a reservoir Ycomprising two parts, one ofsaid parts beiiig'deeper than the other a conduit leading from saiddeeper part, asiphon device including a pair of communicating spacedlegs positioned with one ot said legs coininunicating with one of saidreservoir parts and the other leg with the other of said parts, saiddevicehavingv an outlet, a hollow member connected to said outlet, saidhollow member extending down into said 'deeper part below the saidconduit and Vcommunicating with said conduit.

2. In a sewer flushing device, a reservoir comprising two parts, aconduit leading from one of said parts, a siphon device comprising apair ofcommunicating spaced hollow legs positioned with one of said legscmmunicating with one of said reservoir parts and the 'other leg wlththe other of' said parts, said device having an outlet, a hollow memberlconnected to said outlet, said hollow member extending down into saidreservoir and coni- 'municating with said conduit.

3. Ina sewer flushing device, a reservoir comprising two parts, one ofsaid parts be-A and communicating with said conduit.

4. In a sewer flushing device, a reservoir, a partition extending acrosssaid reservoir and dividing saidreservoir into twoV parts, one of saidparts being deeper than the other,

' a conduit leading from said deeper part, a

siphon device, said siphon device including an inverted U-shaped portioncomprising a pair or' communicating spaced hollow upright legspositioned with one of said legs communicating with one of saidreservoir parts and the other leg with the other of said parts, saidU-shaped portion having a lateral outlet at the highest point thereof, ahollow member connected to said lateral outlet, said hollow `memberextending down into said deeper part below the said conduit and beingbent back upon itself and extending upward and communicating with saidconduit.

5. In a sewer iiushing device, a reservoir comprising two parts, one ofsaid parts bef i ing deeper than the other, a conduit leading meanswhereby when the water level in the i'i'oni said deeper part, a Siphondevice in cluding a pair-of communicating spaced legs 'positionedwith-one of said legs communieating with one of said reservoir parts andthe other leg with the other of said parts, said device having anoutlet, a hollow member connected to said outlet, said hollow memberextending down into said deeper part below the `said conduit andcommunicating with said conduit, means to convey Water to each of saidreservoir parts, means to control the flow of water into each of saidreservoir parts,

shallow reservoir part reaches a predetermined low level waterwill beadmitted to said shallow part and when it reaches a predetermined highlevel the water will be shut off, and means whereby when the water insaid deeper reservoir part rises to a predetermined level water will beadmitted to said deeper part and when the water falls below apredetermined level the water will be shut off.

G. In a sewer fiushing' device, a reservoir comprising two parts, one ofsaid parts being deeper than the other, a conduit leading from saiddeeper part,'a siphon device, said siphon device including an invertedU- shaped portion comprising apair of communicating legs positioned withone of said legs communicating with one of said reservoir parts and theother leg with the other oi" said parts, said U-shape-d portion havingan outlet, a hollow member.connected to said outlet, said hollow memberextending down into said deeper part below the said conduit and beingbent back upon itseli1 and extending upward and communicating with saidhollow conduit, means to convey water to each of said reservoir parts,means to control the flow of wat-er into each of said reservoir parts,means whereby when the water level in the Yshallow reservoir partreaches a predetermined low level water will be admitted to said shallowpart and when it reaches a predetermined high level the water will beshut off, and means whereby when the water in said deeper reservoir paitrises to a predetermined level water will Vbe admitted to said deeperpart and when the water falls below a predetermined level the water willbe shut oit.

'Y 7. In'a sewer flushing device, a reservoir, a partition extendingacross said reservoir and divfidin-g said reservoir into two parts, oneof said parts being deeper than the other, a conduit opening into saiddeeper part, a

siphon device, said siphon device including Y a U-shaped portioncomprising a pair of communicating, spaced, hollow, upright legspositioned with one of said legs communicating with one of saidreservoir parts and the other leg communicating with the other of saidparts,'said U-shaped portion having a lateral outlet at the highestpoint thereof, a hollow member connected to said lateral outlet, saidhollow member extending down into said well below the sai-d conduit andbeing bent back upon itself and extending upward and communicating withsaid conduit, means to convey water to each of said reservoir parts,means t-o control the flow of water'into each of said reservoir parts,means whereby when the water level in the reservoir part not includingsaid well reaches a predetermined low level water will be admitted tosai-d last part and when it reaches a vpredetermined high level thewater will be shut ofi', and

means whereby when the water in said reser-

